＊Unequal flute spacing, unequal helix angle and high rigid end profile design to minimize chatter realize high efficient machining. ＊New developed special edge profile realized multi-functional performance of side milling, slot milling and plunging approaches on stainless steel. ＊Optimized high heat-resistance MUGEN COATING PREMIUM to realize stable long time machining. ＊Long neck type prevent interference with work material, the Under Neck length lined up with L/D = 3 to 5.